EP 3366716 B1 20200610 - METHOD FOR PRODUCING SEMI-AROMATIC POLYAMIDE AND SEMI-AROMATIC POLYAMIDE
Title (en)
METHOD FOR PRODUCING SEMI-AROMATIC POLYAMIDE AND SEMI-AROMATIC POLYAMIDE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES HALBAROMATISCHEN POLYAMIDS UND HALBAROMATISCHES POLYAMID
Title (fr)
PROCÉDÉ DE PRODUCTION DE POLYAMIDE SEMI-AROMATIQUE ET POLYAMIDE SEMI-AROMATIQUE
Publication
Application
Priority
- CN 201611239093 A 20161228
- CN 2017090830 W 20170629
Abstract (en)
[origin: EP3366716A1] The present disclosure provides a production method of a semi-aromatic polyamide, and a semi-aromatic polyamide. Said production method of a semi-aromatic polyamide includes: step 1 of subjecting an initial charge of a diamine and a binary acid in an amine/acid molar ratio of less than 1.0 to form a slurry together with water and a catalyst, and subjecting the slurry to heating and dissolution to form a saline solution; step 2 of dehydrating said saline solution after detecting the composition thereof, detecting the content of diamine in a steam condensate from a dehydration unit, adjusting the amine/acid molar ratio to be larger than 1.0 by a molten diamine and a monoacid as a molecular weight regulator, and performing pre-polymerization; and step 3 of subjecting a pre-polymerization solution to post-polycondensation after vacuum flashing. The semi-aromatic polyamide of the present disclosure has a low gel content, excellent performance and extensive scope of application.
IPC 8 full level
C08G 69/26 (2006.01); C08G 69/28 (2006.01)
CPC (source: CN EP KR US)
C08G 69/265 (2013.01 - CN EP US); C08G 69/28 (2013.01 - CN EP KR US); C08L 77/00 (2013.01 - KR); C08L 77/08 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3366716 A1 20180829; EP 3366716 A4 20181226; EP 3366716 B1 20200610; CN 106700064 A 20170524; CN 106700064 B 20190108; JP 2019507197 A 20190314; JP 6591670 B2 20191016; KR 102077057 B1 20200213; KR 20180102122 A 20180914; US 10844171 B2 20201124; US 2020055985 A1 20200220; WO 2018120702 A1 20180705
DOCDB simple family (application)
EP 17854184 A 20170629; CN 201611239093 A 20161228; CN 2017090830 W 20170629; JP 2018521282 A 20170629; KR 20187022855 A 20170629; US 201715779414 A 20170629